Drain screen



FIG. 1 illustrates a perspective overview of a drain screen;

FIG. 2 illustrates a perspective underside view thereof;

FIG. 3 illustrates an elevated top side view thereof;

FIG. 4 illustrates an elevated bottom side view thereof;

FIG. 5 illustrates an elevated side view thereof;

FIG. 6 illustrates a perspective top side cross-section view taken along line 6-6 of FIG. 5;

FIG. 7 illustrates a perspective bottom side cross-section view taken along line 6-6 of FIG. 5; and,

FIG. 8 illustrates an elevated side cross-section view taken along line 6-6 of FIG. 5. 

CLAIM The ornamental design for a drain screen, as shown. 